Revert "Remove unnecessary import" (#71)
This reverts commit 9e331f3e2be06b57962e261e8a1574c65fe9a5b6.
Since this has not been published or rolled through to the SDK or
Flutter we will hold it back to reduce risk.
diff --git a/lib/src/json_document_transformer.dart b/lib/src/json_document_transformer.dart
index 3feda43..237193b 100644
--- a/lib/src/json_document_transformer.dart
+++ b/lib/src/json_document_transformer.dart
@@ -7,6 +7,7 @@
import 'package:async/async.dart';
import '../stream_channel.dart';
+import 'stream_channel_transformer.dart';
/// A [StreamChannelTransformer] that transforms JSON documents—strings that
/// contain individual objects encoded as JSON—into decoded Dart objects.
